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comments to build configuration (binding.gyp) file #6

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173 changes: 103 additions & 70 deletions binding.gyp
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Original file line number Diff line number Diff line change
@@ -1,76 +1,109 @@
{
"targets": [{
"target_name": "leveldown"
, "conditions": [
["OS == 'win'", {
"defines": [
"_HAS_EXCEPTIONS=1"
, "OS_WIN=1"
]
, "msvs_settings": {
"VCCLCompilerTool": {
"RuntimeTypeInfo": "false"
, "EnableFunctionLevelLinking": "true"
, "ExceptionHandling": "2"
, "DisableSpecificWarnings": [ "4355", "4530" ,"4267", "4244", "4506" ]
}
, 'VCLinkerTool': {
'AdditionalDependencies': [
# SDK import libs.
'Shlwapi.lib',
'rpcrt4.lib'
]
}
}
}, { # OS != 'win'
'cflags!': [ '-fno-rtti' ]
, 'cflags_cc!': [ '-fno-rtti' ]
, 'cflags_cc+': [ '-frtti' ]
}]
, ["OS == 'mac'", {
"cflags+": ["-fvisibility=hidden"],
'xcode_settings': {
"GCC_SYMBOLS_PRIVATE_EXTERN": "YES" # -fvisibility=hidden
, 'WARNING_CFLAGS': [
'-Wno-sign-compare'
, '-Wno-unused-variable'
, '-Wno-unused-function'
, '-Wno-ignored-qualifiers'
]
, 'OTHER_CPLUSPLUSFLAGS': [
'-mmacosx-version-min=10.8'
, '-std=c++11'
, '-stdlib=libc++'
, '-arch x86_64'
, '-arch arm64'
// This configuration file is used by the build system to define how the
// native modules are compiled and linked for different operating systems.
// It defines target-specific settings for compiling the 'leveldown' module,
// with custom configurations for Windows, macOS, and Linux, as well as
// the necessary dependencies and compiler flags.

"targets": [
{
"target_name": "leveldown", // The name of the target module to be built.
"conditions": [

// Windows-specific settings
[
"OS == 'win'", {
"defines": [
"_HAS_EXCEPTIONS=1", // Enable exception handling
"OS_WIN=1" // Define that the OS is Windows
],
"msvs_settings": {
"VCCLCompilerTool": {
"RuntimeTypeInfo": "false", // Disable runtime type information (RTTI)
"EnableFunctionLevelLinking": "true", // Enable function-level linking for smaller binaries
"ExceptionHandling": "2", // Enable exception handling (specific to MSVC)
"DisableSpecificWarnings": [ "4355", "4530", "4267", "4244", "4506" ] // Suppress specific MSVC warnings
},
"VCLinkerTool": {
"AdditionalDependencies": [
// Additional libraries needed for linking on Windows
"Shlwapi.lib",
"rpcrt4.lib"
]
, 'OTHER_LDFLAGS': [
'-stdlib=libc++'
, '-arch x86_64'
, '-arch arm64'
]
, 'GCC_ENABLE_CPP_RTTI': 'YES'
, 'GCC_ENABLE_CPP_EXCEPTIONS': 'YES'
, 'MACOSX_DEPLOYMENT_TARGET': '10.8'
}
}
}]
, ['OS == "linux"', {
'cflags': []
, 'cflags!': [ '-fno-tree-vrp', '-fno-exceptions' ]
, 'cflags_cc!': [ '-fno-exceptions' ]
}]
]
, "dependencies": [
"<(module_root_dir)/deps/rocksdb/rocksdb.gyp:rocksdb"
]
, "include_dirs" : [
"<!(node -e \"require('napi-macros')\")"
]
, "sources": [
"binding.cc"
}
],

// Non-Windows OS (e.g., Linux, macOS) settings
[
"OS != 'win'", {
"cflags!": [ "-fno-rtti" ], // Disable RTTI for non-Windows platforms
"cflags_cc!": [ "-fno-rtti" ], // Disable RTTI for C++ compilation
"cflags_cc+": [ "-frtti" ] // Enable RTTI for C++ compilation on platforms where supported
}
],

// macOS-specific settings
[
"OS == 'mac'", {
"cflags+": ["-fvisibility=hidden"], // Hide symbols to avoid symbol conflicts
"xcode_settings": {
"GCC_SYMBOLS_PRIVATE_EXTERN": "YES", // Hide symbols in private externs
"WARNING_CFLAGS": [
"-Wno-sign-compare", // Suppress sign comparison warnings
"-Wno-unused-variable", // Suppress unused variable warnings
"-Wno-unused-function", // Suppress unused function warnings
"-Wno-ignored-qualifiers" // Suppress ignored qualifiers warnings
],
"OTHER_CPLUSPLUSFLAGS": [
"-mmacosx-version-min=10.8", // Set the minimum macOS deployment target
"-std=c++11", // Use C++11 standard
"-stdlib=libc++", // Use the libc++ standard library
"-arch x86_64", // Target 64-bit architecture
"-arch arm64" // Target ARM64 architecture (for Apple Silicon)
],
"OTHER_LDFLAGS": [
"-stdlib=libc++", // Link against libc++ on macOS
"-arch x86_64", // Link against 64-bit architecture
"-arch arm64" // Link against ARM64 architecture (for Apple Silicon)
],
"GCC_ENABLE_CPP_RTTI": "YES", // Enable C++ RTTI (Run-Time Type Information)
"GCC_ENABLE_CPP_EXCEPTIONS": "YES", // Enable C++ exception handling
"MACOSX_DEPLOYMENT_TARGET": "10.8" // Set the macOS deployment target to 10.8
}
}
],

// Linux-specific settings
[
"OS == 'linux'", {
"cflags": [], // No additional flags
"cflags!": [ "-fno-tree-vrp", "-fno-exceptions" ], // Disable certain optimizations and exceptions
"cflags_cc!": [ "-fno-exceptions" ] // Disable exceptions for C++ compilation
}
]
}],
"variables": {
"openssl_fips": ""
],

// Define dependencies for the build process
"dependencies": [
"<(module_root_dir)/deps/rocksdb/rocksdb.gyp:rocksdb" // RocksDB is a dependency for the leveldown module
],

// Include directories needed for the build
"include_dirs": [
"<!(node -e \"require('napi-macros')\")" // Include NAPI macros for native bindings
],

// Sources that should be compiled for this target
"sources": [
"binding.cc" // The main C++ source file for building the leveldown module
]
}
],

// Variables section for any additional configurable options
"variables": {
"openssl_fips": "" // Option to define whether to use OpenSSL FIPS (if applicable)
}
}